For many years we have been offering a webmailer via webmail.uni-koeln.de, where you can use calendar functions in addition to pure mail functions. As the underlying external open source system Horde is no longer being actively developed, a change is unavoidable for security reasons. Access to webmail.uni-koeln.de will therefore be successively and irrevocably switched off from November 2025. The webmailer SOGo via sogo.uni-koeln.de is already available to you as an alternative system.
E-mail settings for mail clients (Thunderbird, Apple Mail, Outlook, ...)
Quickinfo
| Server | Server adress | Port | Encryption |
|---|---|---|---|
| Incoming mail server (IMAP) | imap.uni-koeln.de | 993 | SSL/TLS |
| Outgoing mail server (SMTP) | smtp-auth.uni-koeln.de (authentication required) | 587 | STARTTLS |
Einführung in das Mailsystem SOGo
E-Mails in SOGo lesen, schreiben & bearbeiten
Ordner in SOGo verwalten
Nach E-Mails in SOGo suchen
Instructions for client synchronization
E-mail account in Thunderbird (Windows/Linux)
E-mail account in Microsoft Outlook
E-Mail ab macOS 13 (Ventura) und neuer
E-Mail Konto in Thunderbird (Android)
E-Mail Konto in iOS (iPhone iPad)
Further topics
Set up forwarding
Set up out-of-office notification
Filtering e-mails in SOGo
Set up spam policy
Sign and encypt e-mails
mailinglists
FAQ & interesting facts
mailbox size
maximal size of attachments
Recommendations for folder size
Alternatives to sending files by email
Markos in e-mail attachments
Contact
If you have any questions or problems, please contact the ITCC-Helpdesk